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C/2025 R3 (PANSTARRS)


NASA/JPL elements
IAU/MPC elements


On 2026 Apr 15 03h45 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)5.0
Aperture radius used for m12.74 '
Nuclear magnitude (m2)7.6
Aperture radius used for m28.24 "
Coma diameter5.2 '
Coma condensation degree (DC)6
Tail length0.8 °
Tail position angle (PA)285 °
Afrho4817 cm
Afrho error84 cm
r (dist/Sun)0.512 AU
d (dist/Earth)0.739 AU
Instrumental configurationConfig2
InstrumentDobson T256mm
Instrument typeNewton
Instrument aperture (0=naked eye)256 mm
Instrument focale length1269 mm
Instrument focale/diameter4.95
Filter(s)None
CameraSony alpha7s
SensorDC
Sensor size36x24 mm2
Sensor pixels number4240x2832
Sensor temperature13 °C
Binning2x2
MountDobson
MotorizationNo
AutoguideNo
Exposure total time32.8 s
Exposure details98x1/4+25x1/3s
Sky transparency (naked eye max mag)4.5
Seeing2
Moon phase149 °
Moon elongation21 °
Air mass4.6
LocationVersailles
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2.75 "/pix
Image processingbinning flat alignement somme alignement cométaire somme retrait gradient
Remarks or commentsafrho couche R (RAW)
Observation submission date2026 Apr 18 19h23m36s
Observation modification date2026 Apr 18 19h29m41s

(Record n° 31348)

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